Pressure in side a bag, that has been microwaved: Problem 12.19

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SUMMARY

The discussion focuses on calculating the volume of steam produced from 16g of liquid water when boiled in a microwave, assuming the pressure inside the bag equals atmospheric pressure. The key equation utilized is the Ideal Gas Law, PV = nRT, where n is the number of moles of water. The participant successfully determined the number of moles from the mass of water and applied the equation to find the volume of steam generated.

PREREQUISITES
  • Understanding of the Ideal Gas Law (PV = nRT)
  • Knowledge of calculating moles from mass (using molar mass)
  • Basic principles of thermodynamics related to phase changes
  • Familiarity with the properties of water at 100 degrees Celsius
NEXT STEPS
  • Learn how to calculate moles from mass using molar mass of water
  • Study the Ideal Gas Law in detail, including its applications
  • Explore the relationship between temperature, pressure, and volume in gases
  • Investigate the properties of steam and its behavior in closed systems
USEFUL FOR

Students studying chemistry, particularly those focusing on gas laws and thermodynamics, as well as anyone interested in practical applications of physics in everyday scenarios like cooking.

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Homework Statement



16g of liquid water is placed in a flexible bag, the air is excluded, and the bag is sealed. It is then placed in a microwave oven where the water is boiled to make steam at 100 deg Cel. What is the volume of the bag after all the water has boiled? Assume that the pressure inside the bag is equal to atmospheric pressure.

Homework Equations



I don't know...

The Attempt at a Solution



These are the solutions i got, but i don't remember how, i did this problem before i left for break, and now I am back, a month later:

0.016, 0.0013, 16
 
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Do you know about moles (not the furry kind) ?

How many moles of water in 16g?
Then use PV = nRT to get the volume of the gas.
 
thanks man, i actually understood that
 

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